#12029: Fast conversion of ClonableIntArray to list
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Reporter: SimonKing | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.8
Component: combinatorics | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies:
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Comment(by hivert):
Hi Simon,
If correct with respect to memory management, I uploaded a patch which
when
applied over yours gains some more speed:
This is before my patch:
{{{
sage: from sage.structure.list_clone import IncreasingIntArrays
sage: I = IncreasingIntArrays()(range(1000))
sage: timeit("L = I.list()", number=10000)
10000 loops, best of 3: 18.1 µs per loop
}}}
This is after my patch:
{{{
sage: from sage.structure.list_clone import IncreasingIntArrays
sage: I = IncreasingIntArrays()(range(1000))
sage: timeit("L = I.list()", number=10000)
10000 loops, best of 3: 14 µs per loop
}}}
So this is more 20 percents faster... After having a Cython expert check
the
reference counting stuff, this is probably worth including.
What do you think ?
Cheers,
Florent
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12029#comment:7>
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